WO2003008169A1 - Moule de vulcanisation de pneumatiques - Google Patents

Moule de vulcanisation de pneumatiques Download PDF

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Publication number
WO2003008169A1
WO2003008169A1 PCT/JP2002/007125 JP0207125W WO03008169A1 WO 2003008169 A1 WO2003008169 A1 WO 2003008169A1 JP 0207125 W JP0207125 W JP 0207125W WO 03008169 A1 WO03008169 A1 WO 03008169A1
Authority
WO
WIPO (PCT)
Prior art keywords
mold
sector
molding
vulcanizing
pieces
Prior art date
Application number
PCT/JP2002/007125
Other languages
English (en)
Japanese (ja)
Inventor
Takehiro Kata
Original Assignee
Bridgestone Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bridgestone Corporation filed Critical Bridgestone Corporation
Priority to JP2003513755A priority Critical patent/JP4454306B2/ja
Priority to DE60215514T priority patent/DE60215514T2/de
Priority to EP02747663A priority patent/EP1415781B1/fr
Priority to US10/484,006 priority patent/US7025581B2/en
Publication of WO2003008169A1 publication Critical patent/WO2003008169A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00—Producing pneumatic or solid tyres or parts thereof
    • B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
    • B29D30/0601—Vulcanising tyres; Vulcanising presses for tyres
    • B29D30/0606—Vulcanising moulds not integral with vulcanising presses
    • B29D30/0629—Vulcanising moulds not integral with vulcanising presses with radially movable sectors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/10—Moulds or cores; Details thereof or accessories therefor with incorporated venting means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
    • B29C37/006—Degassing moulding material or draining off gas during moulding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00—Producing pneumatic or solid tyres or parts thereof
    • B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
    • B29D30/0601—Vulcanising tyres; Vulcanising presses for tyres
    • B29D30/0606—Vulcanising moulds not integral with vulcanising presses
    • B29D30/0629—Vulcanising moulds not integral with vulcanising presses with radially movable sectors
    • B29D2030/0631—Means for forcing adjacent mould sectors away one from another, e.g. using springs or the like, to create repulsive forces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2030/00—Pneumatic or solid tyres or parts thereof
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S425/00—Plastic article or earthenware shaping or treating: apparatus
    • Y10S425/812—Venting

Definitions

  • the present invention relates to an improvement in a vulcanizing mold for a tire, and particularly to an improvement in a tread ring that contributes to molding and vulcanization of a tread portion, and has greatly improved the ability to discharge air from the mold.
  • the tread ring is composed of a plurality of sector molds divided in the circumferential direction.
  • a so-called split mold the conventional technology for discharging air from the mold is to use a belt hole on the sector mold itself. It is widely known to provide. However, in this case, beard-like spews caused by rubber entering the belt holes impair the appearance of the tire, and special processing steps are required to cut and remove many spews.
  • air is discharged from a minute gap ⁇ between a plurality of fixed molded pieces 22 provided on the inner surface side of each sector mold 21 and arranged in an arc shape in recent years. It has been proposed that in this case, it is advantageous to connect the negative pressure suction means to the minute gap to perform forced exhaust in order to enhance the air exhaust capability.
  • the gap ⁇ 5 is caused by the intrusion of rubber into the piece gap ⁇ .
  • mold cleaning in a short cycle became unavoidable due to early blockage and a further decrease in air discharge capacity.
  • An object of the present invention is to solve such problems of the prior art.
  • the purpose of the present invention is to significantly increase the air discharge capability between the molding pieces of a sector mold.
  • An object of the present invention is to provide a vulcanizing mold for a tire that eliminates almost or completely eliminates a vent hole and does not cause a bad appearance such as a bear.
  • the vulcanizing mold for a tire comprises a plurality of, for example, about 6 to 18 sector molds, each of which has a tread ring for molding and vulcanizing a tread portion of the tire and which is formed in a circumferential direction and is in surface contact with each other.
  • each sector mold is composed of an arc-shaped segment and a plurality of, for example, about 4 to 10 movable molded pieces arranged in an arc on the inner surface side of the segment, Each movable molded piece of each sector mold is urged in a direction away from each other by a spring member, an actuator, or the like.
  • the movable molding pieces are largely separated from each other by the pressing action of a spring member or the like under the open posture where the respective sector molds are separated from each other.
  • each sector mold when closing the mold of the vulcanizing mold, each sector mold is displaced radially inward, and when the movable molding pieces of adjacent sector molds come into contact with each other, each sector mold The movable molded pieces are displaced close to each other against the pressing force of the spring member or under the influence of the actuator, for example, without any action, and when they reach a complete mold closing position, the molded pieces are moved. Approach each other up to a preset narrow gap.
  • each movable molding pin between the adjacent sector molds is usually used until the vulcanization mold is completely closed.
  • the air in the mold is discharged from the large-spaced molding pieces until the movable molding pieces in each sector mold approach each other to the set small gap.
  • the relative spacing of the movable mold pieces under the tread ring forming posture by each sector mold in other words, under the complete mold closing posture, is less than 0.05 mm.
  • the distance between the sector molds is 0.05 mm or more under the mutually separated posture, in other words, under the mold opening posture.
  • FIG. 1 is a schematic diagram showing a conventional sector mold.
  • FIG. 2 is a schematic diagram showing an embodiment of the present invention.
  • 1 indicates a sector mold.
  • the tread ring is configured with the mold closing posture of a total of eight sector molds 1.
  • adjacent molding pieces 3 have stoppers (not shown) Since the separation limit position is specified and the maximum separation distance is set to, for example, 0.5 mm, there is no possibility that each molded piece 3 is excessively displaced and detached from the segment 2.
  • Fig. 2 (a) when the vulcanizing mold, that is, the sector mold 1 is directly opened, the molding pieces 3 of each sector mold 1 are in a separated position to the limit position, The molding pieces 3 between the sector molds are also in the mutually separated posture.
  • each sector mold 1 when each sector mold 1 is displaced radially inward as shown by arrow A in the figure due to mold closing during molding and vulcanization of a green tire, first, The respective molding pieces of the adjacent sector molds 1 are brought into close contact with each other, and subsequently, the distance between the respective molding pieces 3 in each sector mold is gradually reduced. As shown in FIG. 2 (b), the sector mold 1 forms a tread ring 5, and each molding piece 3 in each sector mold has a set gap of less than 0.05 mm. They will be aligned at intervals.
  • the air in the mold is discharged from the widely spaced molding pieces.
  • the air discharge efficiency can be greatly improved as compared with the conventional technology, and this is more effective when forcible exhaust is performed by negative pressure suction.
  • the interval between the molding pieces also increases, so that the rubber is effectively prevented from sticking between the molding pieces, and the air discharging performance is secured over a long period of time. Can be.
  • the air discharging performance is greatly improved, particularly based on the large gap between the molding pieces of each sector mold. Therefore, the occurrence of bears and the like can be effectively prevented even if the vent holes are almost or completely eliminated.
  • the cleaning cycle of the mold can be greatly extended, and the operating efficiency of the mold can be increased.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

L'invention concerne un moule de vulcanisation de pneumatiques présentant une fonction améliorée d'évacuation de l'air dans les éléments de moulage d'un moule compartimenté. Un anneau de semelle est composé d'une pluralité de moules compartimentés de manière périphérique, se trouvant en contact plan les uns avec les autres, destinés au moulage et à la vulcanisation de la semelle d'un pneumatique. Chaque moule compartimenté est composé d'un segment et d'une pluralité d'éléments de moulage mobiles disposés de manière courbée sur la surface intérieure du segment, lesdits éléments de moulage mobiles de chaque moule compartimenté étant éloignés les uns des autres.
PCT/JP2002/007125 2001-07-17 2002-07-12 Moule de vulcanisation de pneumatiques WO2003008169A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2003513755A JP4454306B2 (ja) 2001-07-17 2002-07-12 タイヤの加硫金型
DE60215514T DE60215514T2 (de) 2001-07-17 2002-07-12 Reifenvulkanisierform
EP02747663A EP1415781B1 (fr) 2001-07-17 2002-07-12 Moule de vulcanisation de pneumatiques
US10/484,006 US7025581B2 (en) 2001-07-17 2002-07-17 Tire vulcanizing mold

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2001-216641 2001-07-17
JP2001216641 2001-07-17

Publications (1)

Publication Number Publication Date
WO2003008169A1 true WO2003008169A1 (fr) 2003-01-30

Family

ID=19051096

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2002/007125 WO2003008169A1 (fr) 2001-07-17 2002-07-12 Moule de vulcanisation de pneumatiques

Country Status (6)

Country Link
US (1) US7025581B2 (fr)
EP (1) EP1415781B1 (fr)
JP (1) JP4454306B2 (fr)
DE (1) DE60215514T2 (fr)
ES (1) ES2274056T3 (fr)
WO (1) WO2003008169A1 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006159669A (ja) * 2004-12-08 2006-06-22 Yokohama Rubber Co Ltd:The タイヤ成形用金型、このタイヤ成形用金型を使用したタイヤ製造方法及びタイヤ製造方法により製造されたタイヤ
JP2007084035A (ja) * 2005-08-23 2007-04-05 Toyo Tire & Rubber Co Ltd 空気入りタイヤ及びその製造方法
JP2007098632A (ja) * 2005-09-30 2007-04-19 Asmo Co Ltd 歯車の製造方法、歯車の製造装置、歯車、並びに減速機構付きモータ
JP2007290202A (ja) * 2006-04-24 2007-11-08 Toyo Tire & Rubber Co Ltd タイヤ成型用金型及びそれにより成型された空気入りタイヤ
JP2009202600A (ja) * 2009-06-15 2009-09-10 Toyo Tire & Rubber Co Ltd タイヤ成型用金型
US7637727B2 (en) 2007-02-13 2009-12-29 Toyo Tire & Rubber Co., Ltd. Tire curing metal mold
US8731871B2 (en) 2010-09-22 2014-05-20 Bridgestone Americas Tire Operations, Llc Tire mold design method to minimize unique annular mold parts
JP2015058646A (ja) * 2013-09-19 2015-03-30 東洋ゴム工業株式会社 タイヤ成型用金型及びタイヤ成型方法
WO2022269939A1 (fr) * 2021-06-22 2022-12-29 株式会社ブリヂストン Matrice de moulage de pneu et procédé de production de pneu
WO2022269940A1 (fr) * 2021-06-22 2022-12-29 株式会社ブリヂストン Matrice de moulage de pneumatique et procédé de production de pneumatique

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4346084B2 (ja) * 2004-07-06 2009-10-14 東洋ゴム工業株式会社 タイヤ成型用金型
CN101024368B (zh) * 2006-02-22 2010-05-26 东洋橡胶工业株式会社 充气轮胎及其制造方法
JP4780772B2 (ja) * 2006-06-13 2011-09-28 東洋ゴム工業株式会社 タイヤ成型用金型及びそれにより成型された空気入りタイヤ
EP2097251B1 (fr) * 2006-11-27 2013-01-02 Pirelli Tyre S.p.A. Appareil pour la vulcanisation et moulage de pneus de véhicule
US7540730B1 (en) 2007-12-20 2009-06-02 The Goodyear Tire & Rubber Company Tire mold
US7800238B2 (en) 2008-06-27 2010-09-21 Micron Technology, Inc. Surface depressions for die-to-die interconnects and associated systems and methods
EP2296860B1 (fr) * 2008-06-30 2015-01-28 MICHELIN Recherche et Technique S.A. Moule pour pneu ayant un système d'ouverture de moule efficace
KR101006898B1 (ko) 2008-10-30 2011-01-14 한국타이어 주식회사 자동차용 타이어의 가류 장치
WO2010049960A1 (fr) 2008-10-31 2010-05-06 Pirelli Tyre S.P.A. Procédé et appareil pour moulage et vulcanisation de pneus de véhicule
US9604423B2 (en) * 2013-06-28 2017-03-28 Compagnie Generale Des Etablissements Michelin Tire mold with improved durability
CN104552671B (zh) * 2015-01-05 2017-06-09 山东豪迈机械科技股份有限公司 可调节排气间隙的花纹块及无气孔轮胎活络模具

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5120209A (en) * 1989-12-29 1992-06-09 Macmillan Kenneth T Apparatus for molding tire treads
JPH05220753A (ja) * 1992-02-13 1993-08-31 Hashiba Tekko Kk タイヤ加硫成形用金型の製造方法
JPH05220748A (ja) * 1992-02-13 1993-08-31 Hashiba Tekko Kk タイヤ加硫成形用金型
US5492669A (en) * 1992-05-13 1996-02-20 Sedepro Tire mold and method of molding the tire
EP0860260A1 (fr) * 1997-02-19 1998-08-26 Sedepro Moule pour pneus
JP2001232640A (ja) * 2000-02-21 2001-08-28 Yokohama Rubber Co Ltd:The タイヤ加硫成形用金型の製造方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
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IT1240295B (it) * 1990-04-13 1993-12-07 Pirelli Stampo e metodo per la vulcanizzazione di pneumatici e metodo per fabbricare stampi
FR2712229A1 (fr) * 1993-11-12 1995-05-19 Sedepro Moule pour pneumatique, et procédé de moulage du pneumatique.
US6382943B1 (en) * 1998-10-08 2002-05-07 The Goodyear Tire & Rubber Company Multiple insert tire mold and assembly method
AU1073099A (en) * 1998-10-08 2000-04-26 Goodyear Tire And Rubber Company, The Multiple insert tire mold and assembly method
JP4353588B2 (ja) * 1999-07-07 2009-10-28 株式会社ブリヂストン タイヤ成型用金型

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5120209A (en) * 1989-12-29 1992-06-09 Macmillan Kenneth T Apparatus for molding tire treads
JPH05220753A (ja) * 1992-02-13 1993-08-31 Hashiba Tekko Kk タイヤ加硫成形用金型の製造方法
JPH05220748A (ja) * 1992-02-13 1993-08-31 Hashiba Tekko Kk タイヤ加硫成形用金型
US5492669A (en) * 1992-05-13 1996-02-20 Sedepro Tire mold and method of molding the tire
EP0860260A1 (fr) * 1997-02-19 1998-08-26 Sedepro Moule pour pneus
JP2001232640A (ja) * 2000-02-21 2001-08-28 Yokohama Rubber Co Ltd:The タイヤ加硫成形用金型の製造方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP1415781A4 *

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006159669A (ja) * 2004-12-08 2006-06-22 Yokohama Rubber Co Ltd:The タイヤ成形用金型、このタイヤ成形用金型を使用したタイヤ製造方法及びタイヤ製造方法により製造されたタイヤ
JP2007084035A (ja) * 2005-08-23 2007-04-05 Toyo Tire & Rubber Co Ltd 空気入りタイヤ及びその製造方法
JP2007098632A (ja) * 2005-09-30 2007-04-19 Asmo Co Ltd 歯車の製造方法、歯車の製造装置、歯車、並びに減速機構付きモータ
JP4707523B2 (ja) * 2005-09-30 2011-06-22 アスモ株式会社 歯車の製造方法、及び、歯車の製造装置
JP2007290202A (ja) * 2006-04-24 2007-11-08 Toyo Tire & Rubber Co Ltd タイヤ成型用金型及びそれにより成型された空気入りタイヤ
US7637727B2 (en) 2007-02-13 2009-12-29 Toyo Tire & Rubber Co., Ltd. Tire curing metal mold
JP2009202600A (ja) * 2009-06-15 2009-09-10 Toyo Tire & Rubber Co Ltd タイヤ成型用金型
US8731871B2 (en) 2010-09-22 2014-05-20 Bridgestone Americas Tire Operations, Llc Tire mold design method to minimize unique annular mold parts
JP2015058646A (ja) * 2013-09-19 2015-03-30 東洋ゴム工業株式会社 タイヤ成型用金型及びタイヤ成型方法
WO2022269939A1 (fr) * 2021-06-22 2022-12-29 株式会社ブリヂストン Matrice de moulage de pneu et procédé de production de pneu
WO2022269940A1 (fr) * 2021-06-22 2022-12-29 株式会社ブリヂストン Matrice de moulage de pneumatique et procédé de production de pneumatique

Also Published As

Publication number Publication date
US7025581B2 (en) 2006-04-11
EP1415781A4 (fr) 2005-06-29
DE60215514T2 (de) 2007-08-09
JP4454306B2 (ja) 2010-04-21
EP1415781B1 (fr) 2006-10-18
DE60215514D1 (de) 2006-11-30
ES2274056T3 (es) 2007-05-16
EP1415781A1 (fr) 2004-05-06
JPWO2003008169A1 (ja) 2004-11-04
US20040170715A1 (en) 2004-09-02

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